<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>

<script type="text/javascript" src="../script/jquery-1.7.2.js"></script>
<script type="text/javascript">

	//使用$()代替window.onload
	$(function(){
		//使用选择器获取按钮对象，随后绑定单击响应函数
		$("#btnId").click(function(){
			//弹出Hello
			alert('Hello');
		});
	});

</script>


</head>
<body>

	<button id="btnId">SayHello</button>

</body>
</html>